Carbon Dispersion and Morphology in Carbon-Coated Nanocrystalline MgO | Sciact - CRIS-system of Boreskov Institute of Catalysis

Carbon Dispersion and Morphology in Carbon-Coated Nanocrystalline MgO Full article

Journal

Langmuir
ISSN: 0743-7463 , E-ISSN: 1520-5827

Output data

Year: 2003, Volume: 19, Number: 24, Pages: 10426-10433 Pages count : 8 DOI: 10.1021/la0206965

Tags

Adsorbents; Aerogels; Carbon; Chemical vapor deposition; Coatings; High resolution electron microscopy; Magnesia; Monolayers; Morphology; Propylene; Pyrolysis; Textures

Authors

Mel'gunov Maxim S. ¹ , Mel'gunova Elena A. ¹ , Zaikovskii Vladimir I. ¹ , Fenelonov Vladimir B. ¹ , Bedilo Alexander F. ² , Klabunde Kenneth J. ²

Affiliations

1	Boreskov Institute of Catalysis, Prospekt Akad. Lavrentieva 5, 630090 Novosibirsk, Russian Federation
2	Department of Chemistry, Kansas State University, 111 Willard Hall, Manhattan, Kansas 66506

Funding (1)

Civilian Research and Development Foundation

RC1-2340-NO-02

Nanoscale carbon/MgO composite adsorbents have been prepared by chemical vapor deposition (CVD) of carbon over aerogel-prepared nanocrystalline MgO with propylene as the carbon precursor, and by pyrolysis of Mg(OH)2 aerogels modified with resorcinol. A new textural approach including adsorption methods and HREM has been applied for comprehensive characterization of their textural properties. Carbon has been found to form twisted isolated graphite-like fragments designated as nanoislands (1−2 graphite-like monolayers) coating the MgO surface in the case of carbon CVD and a thicker (2−3 graphite-like monolayers) coating in the case of pyrolysis of resorcinol-modified Mg(OH)2 aerogels. The average number of carbon nanoislands grows with an increase of carbon loading whereas their mean size remains approximately the same. The nanoislands have very high specific surface areas close to the maximum surface area possible for carbon. The discovered peculiarities of carbon deposition allow one to achieve controlled carbon/mineral (hydrophobic/hydrophilic) composition of the surface in the surface coverage range of 20−70%.

Mel'gunov M.S. , Mel'gunova E.A. , Zaikovskii V.I. , Fenelonov V.B. , Bedilo A.F. , Klabunde K.J.
Carbon Dispersion and Morphology in Carbon-Coated Nanocrystalline MgO
Langmuir. 2003. V.19. N24. P.10426-10433. DOI: 10.1021/la0206965 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Aug 5, 2002
Published print:	Nov 1, 2003

Web of science:	WOS:000186694500066
Scopus:	2-s2.0-0345376152
Elibrary:	13426012
Chemical Abstracts:	2003:876837
Chemical Abstracts (print):	140:65672
OpenAlex:	W1987727078

DB	Citing
Web of science	12
Scopus	14
Elibrary	17
OpenAlex	17